Comedy is the portrayal of humorous subject matter for the purposes of amusement.

Comedy may use any of a variety of media, ranging from books, magazines, postcards, photos, sculpture, drawing, painting, animation, sound recording, film, video, or video game. In addition, when humorous acts are performed for a live audience, it is still comedy, as the term doesn't only apply to the depiction of the act, but also the act itself. Thus, portrayals such as stand-up comedy and comic theatre are also classified as comedy.

A lolcat poses for comic photographs. A comic actor, also called comedian, acts in comedy films. In cases where few actor skills are required, a performer in comedy films is also called a lolcat.

Over the past few decades, an immense industry for the production and consumption of comedy has grown, with the increasing use of home video and the Internet, as well as the emergence of social attitudes more tolerant of Internet memes. Cat videos have become widely popular and generally distributed via the Internet for free.